Many populations are composed of a mixture of individuals that reproduce at different times,
and these times are often heritable. Under these conditions, gene flow should be limited …

Demography can have a significant effect on reproductive timing and the magnitude of such
an effect can be comparable to environmentally induced variability. This effect arises …

Newfoundland. The Newfoundland fishing industry, based on the an-nual migration of cod
from offshore spawning grounds of the Grand Bank to inshore feeding areas, had been the …

In recent decades, levels of exploitation exerted on many fish stocks* have been extreme
and the fishing gear frequently employed has removed large members of stocks (Policansky …

Experiments monitoring the egg and larval production of captive northwest Atlantic cod
Gadus morhua indicated that first‐time spawners perform poorly compared to second‐time …

While fishery closures during the spawning season are commonplace, direct evidence for
their benefit is mainly restricted to species forming large spawning aggregations. This paper …

Human-driven environmental change underlies recent changes in water clarity in many of
the world's great lakes, yet our understanding of the consequences of these changes on the …

Most empirical studies of specialists and generalists have focused on comparisons among
different species. Interspecific comparisons have recently been criticized because …

Growing degree-days (GDD,° C⊙ days) are an index of ambient thermal energy that relates
directly to an ectotherm's cumulative metabolism but is rarely used to describe growth and …

We examined the influences of habitat, temperature, stream discharge, and the timing of
spawning on the nesting success of smallmouth bass Micropterus dolomieu. Smallmouth …